TW523770B - Fuseholder and fused assembly for an industrial control device - Google Patents

Abstract

A fuseholder includes a main housing configured for receiving a plurality of cartridge fuses, a fuse drawer configured for slidable insertion into the main housing, and a handle coupled to the drawer for opening the drawer to release fuses from the main housing. The drawer includes a retractable handle that is substantially flush with the drawer when the drawer is closed. A handle recess is located adjacent the drawer for prying the handle open with a tool. A drawer frame includes a lock opening therethrough for a lock member to prevent closing of the fuse drawer as desired. Built-in fuse rejection members are included in the main housing to prevent use of incorrect fuses with the fuseholder and an auxiliary contact actuator is provided for added features on an as needed basis.

Description

523770

Cross-References to Related Applications This application declares the benefits of US Provisional Application No. 60 / 254,087, filed on February 7, 2000. BACKGROUND OF THE INVENTION The present invention relates generally to fuse holders for cassette fuses and more particularly to modular fuse holders for industrial control devices. Historically, ferrules or cassette fuses have been used in open fuse holding and fuse platforms. Fuses are held in fuse clips and are used to protect load-side equipment from breaking a fuse connection and breaking. A circuit which is connected by a fuse connected between a power source or a line-side device or circuit and a load-side power receiving device or circuit is damaged by an error current. However, the open fuse, “糸 holder and fuse platform may be accidentally contacted due to the exposure of the fuse and the charging metal surface of the fuse platform during the charging of the fuse, which may cause electric shock. In addition, a fuse puller needs to be used for self-clamping. The fuse was removed and a fuse puller could not be obtained on the right. Attempting to remove the fuse using other tools such as screwdrivers and pliers has exposed a user to danger and the fuse holder or fuse platform. Try to improve the safety and convenience when using cassette fuses'. Modular fuse holders have been developed with fuses and fuse clips enclosed in a protective case to prevent accidental contact with the fuses and fuse holders. Metal surface for charging. Furthermore, at least in certain types of molds, and · type fuse holders, a drawer is used to cover one or more fuses and the fuse is pulled away from the contact clip by opening the drawer, so it is not necessary to use Tool to remove the fuse from the fuse clip, as described in US Patent No. 5,515,023. -4- This paper ruler Appropriate fiscal ® ® Peru (21Gx297 mm) 523770

Although the modular fuse holders have improved centimeter insurance for trained users (female holistic), they also need to face dangerous situations during use, because they are easy to open and close under fuse charging and loading. Dangerous electrical circuits occur between the fuse and the contact clip. In addition, I often move completely: the fuse holder's main body, so the fuse holding state is unnecessarily exposed, and the metal surface is exposed. In addition, fuse drawers are susceptible to damage due to unnecessary filling and operation with fuses other than the fuse holder valley f originally designed or intended for use in a given application, namely the voltage to current ratio. Furthermore, at least some types of modular fuse holders, such as those used in industrial control devices, contain additional features that are not often required or necessary for specific applications. For example, some modular fuse holders are designed to work with iUL (Insurance Test) grade cc fuses and IEC (International Electrotechnical Commission) Type 10χ38 fuses that are commonly used in industrial control devices, which include permanently installed auxiliary contacts Components and associated rotating cams and switches to provide voltage and current connections for early disconnection and later connection for motor control applications. However, the features increase the cost and complex assembly of the fuse holder, so it is necessary to provide a fuse holder that is simpler, lower cost and more functional, which can be easily upgraded to include additional features. SUMMARY OF THE INVENTION In an exemplary embodiment, a fuse holder includes a main housing configured to receive a plurality of cassette fuses, a fuse drawer configured to slide into the main housing, and a handle, For opening the drawer to release the fuse in the main body. The fuse drawer can be selectively positioned in an open position for loading and unloading fuses, and a metal surface enclosing the fuse and the main housing charging -5- 523770 A7-~ --- B7 V. Description of the invention (3): Closed position In the meantime, the drawer handle can be selectively positioned relative to the drawer ::: out position and a retracted position 'and the handle is located in the drawer retracted :: and wait. Therefore, when the fuse drawer is closed, the handle can only be operated without a handle, so the possibility of the fuse holder opening under the voltage and current load can be reduced, thereby avoiding dangerous arc conditions, and improving the safety of the fuse holder. . A drawer includes a handle recess adjacent to the drawer, and the handle of the drawer can be a tool, such as a flat-head screwdriver, inserted into the handle recess and pry open the handle to release it in its retracted position. The fuse drawer includes a drawer frame with a lock opening, and a locking member, such as a padlock, which is inserted into the lock opening to prevent the fuse drawer from closing as needed. The embedded fuse repellent member is contained in the main housing, and the unacceptable fuse is used for the fuse holder, thereby further improving safety and facilitating the correct use of the fuse holder. The king case further includes an auxiliary contact actuator, which can be selectively positioned between a first position and a second position in response to a position of the fuse drawer. A removable auxiliary contact cover provides access to the contact actuator, and a conventional switch assembly can be bolted into the main housing for actuation by the auxiliary contact actuator to upgrade the insurance and '糸 holders to include advanced Characteristics, such as voltage and current contact that are disconnected early and connected later. Therefore, the fuse holder itself can avoid expensive switch components, and a variety of terminal options including screw terminals and spring terminals are available for field wiring options. Therefore, a 'safer, lower cost, and versatile fuse holder provides an efficient fuse connection for use in, for example, industrial control devices. -6- This paper size is applicable to China Standards (CNS) M specifications (⑽χ 297 public love) 523770 A7 B7 V. Description of the invention (4) Brief description of the drawings Figure 1 is a modular fuse holder in an open position Fig. 2 is a perspective view of the fuse holder shown in Fig. 1 when it is in a closed position; Fig. 3 is a perspective view of the fuse holder shown in Fig. 1 and 2 when it is in a locked position; Figure 5 is an exploded view of the fuse holder; Figure 5 is a cross-sectional view of the fuse holder taken along line 5-5 of Figure 3; Figure 6 is a cross-sectional view of the fuse holder taken along line 6-6 of Figure 1; Figure 7 is a cross-sectional view of the fuse holder taken along line 7-7 of Figure 2; Figure 8 is a front view of the fuse holder shown in Figure 1 after the components are removed; Figure 9 is a second implementation of a fuse holder Fig. 10 is a perspective view of a third embodiment of a fuse holder; Fig. 11 is a sectional view of the fuse holder shown in Fig. 10; and Fig. 12 is a side view of a second embodiment of a fuse drawer. FIG. 13 is a perspective view of a fourth embodiment of a fuse holder. Description of component symbols 100 Fuse holder 114 Drawer front cover 102 Main housing 116 Drawer lateral extension 104 Fuse drawer 118 Pull handle 106 Fuse 120 Lateral extension dovetail slot 108 Terminal cover 122 Drawer cam actuator opening 110 Wiring hole 124 DIN execution 112 Housing dovetail groove 126 Housing thread protrusion This paper size is applicable to China National Standard (CNS) A4 (210 X 297 mm) 523770 A7 B7 V. Description of the invention (5 130 Grip recess 132 terminal Cover screw terminals 134 Auxiliary contact cover 140 Padlock 142 Drawer frame 150 Housing fuse clip 152 Fuse clip container 154 Housing terminal 156 Terminal compartment 158 DIN channel 160 Fuse clip 162 Rivet 164 Terminal bridge 166 Terminal piece 168 Pressure plate 170 Protrusions 172 Outer surface of lateral extension 174 Housing opening 176 Fuse support 178 Fuse collar 180 Cam bearing protrusion 182 Cam 184 Cam actuator 186 Shaft 188 Shaft clamp 190 Cam opening 192 Shelves 194 Handle horizontal Extending section 196 Drawer front cover opening 198 Extension barb 200 DIN guide spring 202 Auxiliary contact actuator 204 Contact actuator spring 206 Contact actuator positioning portion 208 Contact actuator signal portion 220 Fuse repulsion protrusion 222 Double-diameter ferrule 230 Fuse holder 232 Pole assembly 234 Housing 236 Terminal cover 238 Screw terminal 240 Wiring Hole 242 Housing dovetail protrusion 244 Fuse drawer connection accessory 246 Dovetail protrusion 250 Fuse holder 252 Spring terminal cover -8- This paper size applies to China National Standard (CNS) A4 specification (210 X 297 mm) 523770 A7 B7 V. Description of the Invention (6 254 Wiring holes 320 Fuse holders 256 Spring terminals 322 Ventilation holes 258 Bare wires 324 Main housing 260 Connection screws 326 Drawer front cover 300 Fuse extension 328 Drawer 302 Fuse rejection member 330 Circuit identification label 304 Drawing cabinet board Detailed description of the protruding invention FIG. 1 is a perspective view of a modular fuse holder 100, which includes a main housing 102 and a slide-out fuse drawer containing a plurality of conventional cassette or ferrule fuses 106. 4 The main housing 10 2 includes a fuse clip (not shown in Fig. 1), which is used to combine the fuse 106 when the drawer 104 is in the closed position. Details later. The terminal cover 1 0 8 is attached to either side of the main housing 10 2 adjacent to the fuse drawer 104, and it includes wiring holes 1 10 to complete the standard threaded wire side and load side electrical connection to the fuse clip. Therefore, when the fuse drawer 104 is closed, the fuse 106 can be finally passed to complete a circuit through the fuse clip. The main housing 102 includes a dovetail groove 112 for receiving locking protrusions (not shown in FIG. 1) of other modular fuse holder components, such as the main housing or another pole of another holder component described later. Housing (not shown in Figure 1). The fuse drawer 10 is connected to the main housing 102 and is combined with the main sliding body for selective positioning between an open position and a closed position, of which the fuse 106 is fully integrated with the fuse of the main housing Conductive metal surfaces of clips and fuse clips. In the closed position, the fuse 1 06 is completely made of drawers. The paper size of the winter paper is applicable to the Chinese National Standard (CNS) A4 specification (210 X 297 mm). 523770 A7 B7 V. Description of the invention (104 is not the same as the main housing 102 Encapsulation of conductive materials, such as in an example embodiment; ^ plastic f raw materials. The fuse drawer i 〇4 includes-the front cover workers 4, lateral extension I and 1 1 6 extend into either side The upper main casing J 2 and a retractable I grip 118 extend outward from the drawer front cover 114 to open the pump 104 and pull out the fuse 1 () 6 from the fuse clip of the king casing. The extension 116 includes a dovetail slot 120 for receiving a locking protrusion of another fuse drawer (not shown in FIG. 1) or an attachment accessory of another pole drawer described later (not shown). The extension 116 also includes a cam bearing protrusion (not shown in the figure) for combining a drawer operator cam (not shown in figure i) to enhance the relative sliding between the drawer 104 and the main housing 102. The drawer cam is actuated Device opening 122 extends through the main housing 102 for remote mechanical actuation of the fuse drawer 104 And a rotary device (not shown) is engaged with the opening of the drawer cam actuator 1 2 2. In the embodiment of the full-length embodiment, the fuse drawer 104 accommodates three cassette fuses 106 and is therefore special Suitable for three-phase power applications, and fuses 丨 〇6 are arranged in a straight line on the side to reduce the depth of the main housing 〇〇2 and open the fuse drawer 104 to add or remove fuses. 〇〇6 required space. In a modified embodiment, the fuse drawer 04 is constructed to match more or less than three fuses 10 6 ′ and adopts fuses opposite to each other 〇 06 transformation configuration. In addition, in an exemplary embodiment Fuse 丨 〇6 is a UL-rated CC fuse, UL supplementary fuse, or IEC 〇χ38 fuse, which is commonly used in industrial control applications' and the main housing 丨 〇2 is based on! E c industry standard is about 4 5 The millimeter width is used for contactors, relays, manual motor protectors, and integrated starters, which are also commonly used in industrial control applications. Therefore, this paper standard applies to China National Standard (CNS) Α4 specifications ( twenty one 0 X 297 public love) B7 V. Description of the invention (8) Ϊ In the example embodiment, the fuse holder 100 is particularly suitable for industrial control system applications, but the benefits of the present invention are also effective for fuse holders of other sizes. In the embodiment, the main housing 102 is mounted on a conventional DIN rail 124. In a modified embodiment, the main housing 102 is integrally formed on the main body 102 The threaded protrusion 126 is used for chassis installation. Figure 2 is a perspective view of the fuse holder 丨 〇〇 and the drawer 丨 * is in a closed position. The lateral extension 116 of the drawer is located in the main housing 102, and the drawer Then 1 1 4 closes the main housing to prevent accidental contact with the charging metal surface of the fuse holder 100 or fuse 106 (not shown in Figure i) in use. The grip 118 is tied in a fully retracted position, i.e., approximately above the drawer front cover 114. Accordingly, the grip 118 is substantially inaccessible and difficult to reach by fingers. On the contrary, the grip 118 can only be easily extended when a tool (not shown), such as a flat-head screwdriver, is inserted into one of the handles in the front cover 114 of the drawer to reach the opening or recess 13, and the tool can be used to hold The handle U8 is pried to a release position, that is, it can be grasped by a user's finger to open the fuse drawer 104. Therefore, 'compared to a conventional fuse holder including a permanently extended draw handle', a fuse drawer 1 0 with a retractable grip 1 1 8 is less likely to open accidentally when the fuse holder 100 is being filled, This prevents accidental dangerous arcing conditions between the fuse and the fuse clip of the main housing. The sub cover 1 0 8 is attached to the main housing 1 0 2 and includes screw terminals 1 2 2 for establishing electrical connection to the respective fuses 1 6 through wiring holes 1 1 0 according to the conventional technology (as shown in the figure) 1). A removable auxiliary contact cover 1 3 4 is located above the fuse drawer 104, for bolting an optional auxiliary contact switch-11-This paper size applies to China National Standard (CNS) A4 (210 X 297) Mm) 523770

The channel of the mechanism (not shown in the figure) is to provide early disconnection and later-on contact to avoid private pressure and packet flow load through the fuse holder because of the disconnection or connection to the fuse clip of the main casing. FIG. 3 illustrates that the fuse holder 100 is in an unlocked position, that is, the drawer 104 is fully autonomous with its extensible handle 1 丨 8, and the fuse 106 is extended as shown in Figure 1. No) It is removed, and a locking member such as a padlock 14 is inserted through a drawer frame 142 between the drawer front cover 114 and the main housing 102. Therefore, the fuse 106 is exempt from replacement and the fuse drawer 104 A circuit can be completed through the fuse holder 100 without turning off. According to this, the load-side equipment that can be surely connected to the wiring hole 丨 丨 〇 can be kept uncharged as required. In a modified embodiment, other conventional locking mechanisms are used in place of the padlock 140 'to prevent the fuse drawer 104 from closing and unnecessarily charging circuits or components. Figure 4 is an exploded view of the fuse holder 100, illustrating the internal components. The main case body 102 includes a fuse clip portion 5o, which constitutes an individual fuse container 512 ', and a terminal portion 154 extends from the clip portion 150 and constitutes a separate terminal chamber 156. The mounting protrusion 126 extends from the terminal portion 154 below the terminal chamber 156 for the main chassis of the main body 102 to be mounted. A din track groove 158 extends below the main housing 102 for attachment to the din track 124 shown in FIG. 1. The fuse clip 160 is accommodated in the fuse clip container 522 of the main casing 152, and is attached to the fuse clip container 152 with a tubular rivet 162. The terminal bridge piece 1 64 is extended from the fuse clip 16 into the terminal compartment 156 of the main housing 10, and the fuse clip 16 is connected to the terminal piece 6 6. Threaded terminals 1 3 2 are accommodated through the terminal piece 166, and they include a pressure plate 168 for a combined insertion through the terminal -12- This paper size applies to China National Standard (CNS) A4 (210 X 297 mm) 523770 A7

盍 1 0 8 The wiring of the wiring hole 1 1 〇 is continued. The same as striking the soil, the _ long strip, and the spring (not shown in the figure), the terminal cover is attached to the king body 102 and is generally enclosed. Terminal compartment 156. The fuse drawer 104 includes a laterally extending section 116 extending between the fuse clips 160 and into the main housing 102. The first medal-like protrusion 17 extends from the outer surface 172 of each horizontally extending section H6, and when the filigree drawer 1 () 4 is completely closed, it is M in the main housing 1G2, a complementary opening M. The tail groove 120 extends through the medal-like protrusion 170 for receiving one of the locking protrusions (not shown) of another component. For example, it is necessary to install a fuse drawer attachment accessory fixed to the fuse drawer 104 (in FIG. 4 (Not shown), so it moves with the fuse drawer 104 when the fuse draw 104 is opened and closed. The drawer frame 142 extends below the drawer front cover 114 and constitutes individual fuse supports 176, each supporting a set of rings 178 of the fuse 106. The central fuse support member 176 forms a lockable opening for receiving a locking member, such as a padlock 14o (as shown in Fig. 3), while other fuse support members 76 are open-ended to facilitate locking. Composite member is inserted. A cam bearing projection 180 is provided on each lateral extension i 16 of the drawer 104 and is opposite to the front cover 114 of the drawer. The projection 18 is received in a cam 182 extending from the cam actuator 184. The cam actuator is installed in the main housing 102 below the fuse clip container 152 and between the fuse terminal containers 156. A square shaft 1 8 6 is coupled to the cam actuator 丨 8 4 and is fixed to the cam actuator 184 by a fixing clip 188, and the cam actuator 184 is accommodated in any side of the main housing 102 . In accordance with this, the cam actuator 丨 84 is combined with the rotation movement of the cam 182 ′ and the cam actuator 184 is transformed into a substantially linear displacement of the drawer 104 and vice versa. Each cam actuator 丨 8 4 cam actuator open-13-This paper size applies to China National Standard (CNS) A4 specification (210X297 mm) 523770 A7 ___B7 V. Description of the invention (11) " Hole 1 2 2 It can be accessed through the openings in the main casing 102, for remote mechanical actuation of the fuse drawer 104. A flat shelf 1 9 2 extends between the lateral extensions 1 16 of the drawer 104, and the handle 118 includes two lateral extensions 194 and contains a long slotted end, which can be used to hold the drawer 104 when it is completely closed. Placing shelf 192. The lateral extension 1 9 4 of the handle is connected through the opening 1 9 6 in the front cover of the drawer, and the extension 194 extends through and is substantially aligned with the fuse support 176 to provide a fuse for the fuse. The gap of 106. The long-slotted end of the extension section 194 includes barbs 198, which provide a stop to prevent the handle 8 from passing through the opening 196 of the drawer cover and prevent the handle 118 from moving out of the drawer front cover 114. In yet another embodiment, the long slotted end of the 'extended section 194 is slightly wider and / or thicker than the rest of the extended section 194, so that the handle jig of the drawer can produce a plastic interference when it is retracted. Therefore, a small amount of force is required to return the handle n 8 to its retracted position, thereby preventing the fuse drawer 〇 04 from accidentally opening. A similar plastic interference is also applied to the front shelf of the drawer by a protrusion (not shown in FIG. 4), which is used to interfere with the main housing 102 when the drawer of the fuse 104 is closed, thereby preventing the drawer. 4 accidentally opened. The DIN track spring 200 is provided with a DIN rail groove 158 'adjacent to the main housing 102 to facilitate the provision of a biasing force to maintain the main housing 102 at a required position relative to the DIN rail 1 24 (as shown in the figure). 1). An auxiliary contact actuator 202 and a contact actuator spring 204 are provided with a fuse holder 100, which is easy to upgrade to match the bolt-on attachment of an optional auxiliary contact switch mechanism (not shown) to provide early access. Contacts that are disconnected and later connected to avoid voltage and current loads due to disconnection or connection to the main casing -14- This paper size is suitable for paper g @ 家 standard (CNS) A4 specifications (21GX 297 public love) " " 12 V. Description of the invention (102 The risk wire clip 160 passes through the fuse holder 100. As can be seen from the following step-by-step description, the auxiliary contact actuator 202 includes a positioning portion 206 that is attached to the lower board 192 and a drawer for producing ^ Hold,. ^ K through the position of the contact switch mechanism :: including but r;: =: and holders 丨 ... early disconnection and later connection connection. Removable :::: The contact cover 134 is used as required Letter to provide through-contact actuator Figure 5 is the fuse holder through the central fuse support 176. According to: when the drawer 104 is in a fully open position relative to the main housing 102 and the grip The handle 118 is related to the front cover 114 of the drawer when it is fully extended. 〇6 is removed and the padlock 140 is installed to prevent the fuse drawer ι04 from closing, the fuse clip 160 extends into the fuse clip container 152 (as shown in FIG. 4), and the terminal piece 166 is extended from # 自 # 危 丝 夹 16 () 'to The supply, line, and load sides are electrically connected to the screw terminals 132. The drawer shelf 192 is positioned between the fuse clips 160, and the auxiliary contact actuator 202 is biased downward by the contact actuator spring 204. A first or open position. In this position, the contact actuator section 206 activates a set of switches (not shown) to operate an auxiliary control contact (not shown) for opening a power contact (picture In an embodiment (not shown in the figure), the auxiliary contact cover 134 is removed and a conventional switch assembly (not shown) is plugged into the fuse holder 100 to replace the contact cover 134, and opened. The relationship is wired to a power contact according to a conventional technique. When the fuse drawer 104 is closed, the drawer shelf 192 is coupled to the positioning portion 206 of the contact actuator and a force is applied to make the contact actuator linearly upward by about ^ mm. And bias the spring 204 to a second or closed position (not shown), Middle-15- Common Chinese National Standard (CNS) A4 specification (21〇:: 297mm) 523770 A7 One ----- B7 V. Description of the invention (13) The contact actuator unit 206 excites the group of switches to operate auxiliary Control the contact and close the power contact. Therefore, when the contact actuator 202 moves between the first and second positions, the group of switches is actuated to facilitate the electric contact and current load at the power contact. # 通 和 早 ㈣, not in the fuse holder 10G. So 'different from conventional fuse holders including permanently installed auxiliary contacts, the added costs of contacts, switches and associated assemblies are, for example, only in Save only when needed, and the open ^ ^ assembly in this advanced feature can be easily installed by bolting to upgrade the fuse holder 100. In addition, the linear displacement system of the contact actuator 202 further reduces costs because it avoids the more expensive rotary contact actuators of conventional fuse holders. Fig. 6 is a cross-sectional view of a fuse holder through a part of a cam actuator 丨 84, and illustrates the combination of the lateral extension of the drawer 18 and the cam 182. The fuse drawer 1 shown in the figure is 〇4 series In the open position, a fuse 106 is mounted in the fuse support 176. When the fuse drawer 104 is closed, the protrusion 1 80 is moved backward into the main housing 02 and the cam 8 2 is rotated backward (clockwise in FIG. 6) until the drawer 104 is completely closed. Similarly, when the fuse drawer 104 is opened, the protrusion 180 is moved forward (to the left in FIG. 6) and the cam 182 is rotated forward (as shown in the counterclockwise direction in FIG. 6) until the drawer 〇4 Fully open to provide an appropriate clearance to install or remove a fuse 106. At the same time prevent a fuse drawer from being completely removed from the main housing 102 and expose the conductive metal surface of the fuse clip 160. When the cam actuator 丨 8 4 is rotated by a rotating device (not shown) to remotely locate the fuse drawer through the cam actuator opening 丨 2 2 (as shown in Figures 1 and 4), the cam 1 $ Rotary transport of 2-16- This paper size applies to China National Standard (CNS) A4 specification (210X297 mm) 523770

Movement causes a linear displacement of one of the protrusions 180 and accordingly opens and closes the fuse drawer 104. Figure 7 is a cross-sectional view of the fuse holder 1 00 in the closed position, and is suitable for voltage and current loads. The drawer 丨 〇4 is completely closed and the handle i 丨 8 is in the fully retracted position and is approximately higher than the drawer front cover 丨 丨 4 to prevent the handle 丨 丨 8 from being easily operated. The cam actuator 1 8 4 is in the backward position, and the contact actuator 2 02 is moved upward or vertically by the drawer shelf 1 92 to the second or closed position shown in FIG. 5. The fuse 106 is located in the fuse clip 16 (as shown in Figure 4 · 6), and the screw terminal 丨 32 is accommodated by the contact piece 丨 66, and the power supply is connected pneumatically through the wiring hole in the terminal cover 108; π〇. The auxiliary contact cover 134 is removably attached to the main housing 102 for access to the auxiliary contact actuator portion 2008. FIG. 8 illustrates the main housing of the fuse holder, and the fuse is loaded, and is removed in order to reveal the characteristics of a fuse rejection. Fuse 丨 〇6 is installed in the fuse clip container 1 5 6 fuse clip 丨 6 〇 (as shown in Figure 4), and the terminal cover 108 is fixed to the main housing 1 02, through the screw terminal 132 electrically Connected to fuse 1 06. The fuse repulsion protrusion 2 2 0 extends into a part of the fuse container 156 'so that only a specific fuse can be installed in the fuse holder 100. In an exemplary embodiment, the fuse repulsion protrusion 220 is integrally formed in the main housing 102 ′, and its size is suitable to only accept 111 ^ (: 0: fuse, which is characterized by a double-diameter ferrule 222, that is, Cooperate with the fuse repulsion protrusion 22 °. Other types of fuses, such as the IEC 10 乂 38 type fuse without this double-diameter ferrule, are not suitable for the fuse holder 100 ° in a conversion because the fuse repulsion protrusion 2 2 〇 In the embodiment, the fuse repellent protrusion 220 is not adopted -17- This paper size applies the Chinese national standard χ 297

523770 Description of the invention (15 uses and fuse holder 1⑽ can accept a variety of fuses. Figure 9 is a fuse holder 2 miscellaneous ^ ^ ^ ^ ^ „Another example of the mutual body diagram, which includes insurance ,,, and holding W00 An attached _pole assembly is also available. Another-extremely thin 232 includes-the housing 23 4 and it includes similar fuse clips and terminal pieces (not shown in Figure 4) ^ a pair of fuse clips (not shown in the figure) ) And the terminal piece (not shown in the figure) and the terminal cover 23 6 provides access to the screw terminals 23 8, and the gas supply is electrically connected through the wiring hole 240. Therefore, the housing is called the main housing similar to the fuse holder! 〇〇 10, but it only fits a single fuse. Shell; 234 includes dovetail protrusions 242 for the main housing to be locked to the fuse holder. Dovetail grooves on either side of 102 (see Figure i) Therefore, the case 234 can be attached to the main case M on either side of the fuse drawer 104 to facilitate greater functionality and current installation selectivity. A fuse drawer attachment 244 is connected to The fuse drawer 104 is accommodated in a horizontal direction by a dovetail protrusion 246 Within the extended dovetail slot 120 (as shown in Figures 1 and 4), the drawer attachment 244 is fixed to the fuse drawer 104 and is opened and closed with the fuse drawer 104. The fuse drawer attachment 244 includes a Similar to the fuse support of the fuse support 丨 76 (as shown in Fig. 4), when the fuse drawer 104 is opened, a fuse can be installed, replaced, or removed in the fuse drawer connection accessory 2 4 4. S When the fuse drawer 104 is in the closed position, the drawer is connected to the attachment 2 444, that is, the enclosure body 234, to avoid being exposed to the charging metal surface of the fuse and the fuse clip in the other pole assembly 232. In many embodiments, A fuse repulsion characteristic, as described above, can be used in the other pole case 234, whether it is the same or different from the main case 10-2 -18- This paper size applies to China National Standard (CNS) A4 Specifications (210 X 297 mm) 523770 A7 B7

Used. Therefore, using the other pole assembly 23 2 the four fuses are all accommodated by the fuse holder 2 3 0. In a further embodiment, a fifth fuse is opposed by installing another pole assembly 2 3 2 To accommodate the first. In another embodiment, another pole assembly 23 2 can be constructed to cooperate with other fuses more than one, so as to further increase the number of fuses that the fuse holder 23 can hold. FIG. 10 illustrates a third embodiment of the fuse holder 250 similar to the fuse holder 250 described above, but including a spring terminal (not shown in FIG. 10) and a spring terminal cover 252 instead of the screw terminal 132 (as shown in FIG. 10). 4) and threaded terminal cover 108 (shown in FIG. 4). Therefore, the fuse holder 25 is constructed and operated in accordance with FIGS. 1-8, and further differs through the wiring hole in the spring terminal cover 252 254 achieves the electrical connection to the spring terminal instead of using the screw terminal 1 2 2 and the wiring hole 丨 丨 0 (as shown in Figure 4). In another embodiment, another pole assembly (not shown) is similar to the other pole assembly 23 2 (as shown in FIG. 9 and above), but the spring terminal and the spring terminal cover are used instead of the screw terminal and the thread. Terminal cover 2 3 2 (as shown in Figure 9). FIG. 11 is a cross-sectional view of the fuse holder 250, illustrating wiring to the spring terminal 256 through the wiring hole 254, and the bare wire 258 passes through the wiring hole 254 and is combined with the spring terminal 256, which is an example embodiment. These are from the conventional thresholds of PHOENIX CONTACT of Mead, Pennsylvania and WAG0® of Germanic, Wisconsin. The spring terminal 25 6 is connected to the terminal piece 166 by using a connecting screw 260. The spring terminal 25 6 facilitates the electrical connection to the fuse holder 25 0 without using a tool, but the former titled bare wire 2 5 8 is at its end. Strip ahead. In alternative embodiments, the other spring ends -19-

523770 A7 _B7 V. Description of the invention (17) The sub and clamp mechanism are used to replace the sill clamps to obtain the same benefits. Fig. 12 is a side view of a second embodiment of a fuse drawer 300, in which components (shown and described in Figs. 1-7 and 9-11) common to the fuse drawer 104 are identified by the same number. The fuse draw 3 0 0 structure is roughly similar to the fuse drawer 104, but it includes a fuse repellent member 3 0 2 extending from the drawer frame 1 4 2 and the fuse support 1 7 6, and the fuse repellent is directly provided to the drawer. Within 3 0 0, it is easier to identify the mismatched fuse status. The fuse rejection member 3 2 limits one of the openings or gaps of the fuse support 1 7 6 to match the double-diameter ferrule 222 of a UL-rated CC fuse, while avoiding other types of fuses such as flat ferrule fuses to extend beyond the fuse Rejection member 3 02. The length L of one of the drawer frames 1 4 2 extending from the repulsive member 3 2 2 is selected so that when other types of fuse ferrules (not shown) are adjacent to the fuse repellent member 3 2 2 ' One end overhangs or extends beyond the drawer frame 142 and prevents the drawer 300 from closing. In other words, L is selected to be shorter than the length of a fuse to be repelled, so that the fuse itself interferes with the operation of the door 300. In one embodiment, the fuse repellent member 3 2 is integrally formed in the drawer frame 1 4 2 and / or fuse support 1 7 6. In an alternative embodiment, the fuse rejection member is provided separately. In another embodiment, different size fuse repulsion members 302 are used to repel other types of fuses, and different fuse supports 176 in the drawer 300 include fuse repellent members of different sizes to repel different types. Of fuse. In yet another embodiment, less than all of the fuse support members 176 in the drawer 300 include a fuse rejection member 3 02 ° -20- This paper size applies to China National Standard (CNS) A4 specifications (210 X 297 mm) '' ~-523770

In addition, the flat shelf 192 of the drawer (as shown in FIG. 4) includes a protrusion 3 04 protruding from there, which can cause plastic interference with the switch main housing 102 when the drawer 300 moves to a closed position (such as Figure 4). According to this, some force is required to close the door to resist the interference resistance of the protrusion 3 04 and the main casing 102, so that the accidental closing of the drawer 300 can be avoided. The fuse drawer 300 can be used in any one of the above embodiments of the fuse holder, and can further be used in combination with the fuse rejection characteristic and incorporated in the main case of the fuse holder. The exception to be noted with regard to fuse rejection is that fuse drawing 3 0 0 can be performed in relation to fuse drawing 1 104 as described above. Figure 13 illustrates yet another embodiment of a fuse holder 3 20, which includes additional features and can also be incorporated in any of the above embodiments. The more specific 疋 'fuse holder 320 includes a plurality of ventilation holes 322 which extend through a main housing 324 adjacent to the front cover 326 of the drawer when the extension 328 is closed, so' flow through the fuse and the main housing 3 2 4 The heat generated by the current in the conductive fuse clip and the conductive terminal part can be dissipated to the surrounding environment. In addition, a circuit identification tag 3 30 is installed on the front cover of the drawer to provide a visual mark of the circuit to be modified by the fuse holder 3 2 0, especially when used in a large power system with many fuse holders. The label 3 3 0 can simplify the identification of the proper power subsystem for maintenance. This provides a multifunctional fuse holder, which is especially suitable for industrial control devices and for UL class CC fuses and IEC 10X3 type 8 fuses. The retractable fuse drawer handle can prevent the fuse drawer from opening easily when the fuse is being filled. The fuse rejection is provided to determine the correct fuse for the fuse holder. The auxiliary contact actuator helps to use the switch as required. This paper size applies Chinese National Standard (CNS) A4 specification (210 X 297 mm) 523770 A7 B7 V. Description of the invention (19) The screw terminal and spring terminal can provide wiring options, and the drawer can be safely locked in one Open position to prevent a circuit from being charged through the fuse. The other pole assembly provides easy changes to the fuse holder to match a varying number of fuses, thus providing a safe, low cost, and easy-to-manufacture modular fuse holder. , Can be easily and conveniently upgraded to advanced features according to the needs of end users. Although the present invention has been described above with reference to a number of specific embodiments, those skilled in the art will understand that the present invention can be implemented in a variety of transformational forms within the spirit of the scope of the patent application. -22- This paper size applies to China National Standard (CNS) A4 (210 X297 mm)

Claims (1)

523770 A8 B8 C8 _____ _D8 6. Scope of patent application 1. A fuse holder, comprising: a main casing 'is configured to accommodate a plurality of cassette fuses; a fuse drawer is configured for sliding insertion into the main casing The fuse insert drawer can be selectively positioned between an open position and a closed position; and a handle is connected to the drawer for opening the drawer, and the handle can be selectively positioned at an extension relative to the drawer Between the out position and a retracted position. 2. If the fuse holder of item 1 of the patent application, the drawer includes a handle recess adjacent to the drawer. 3. If the fuse holder of item 1 of the patent application scope, it also contains the other pole housing installed in the fuse drawer. 4. The fuse holder according to item 1 of the patent application scope, the fuse drawer includes a drawer frame, and the drawer frame includes at least one through opening. 5. The fuse holder according to item 1 of the patent application scope, further comprising at least one fuse rejection member. 6 * If the fuse holder of item 1 of the patent application scope, the main housing also contains an auxiliary contact actuator, which can be selectively positioned between a first position and a second position. The position is determined by the position of one of the drawers. 7 · If the fuse holder of the scope of patent application item 1 still contains at least one screw terminal ° 8. If the fuse holder of the scope of patent application item 1 still contains at least one -23- This paper meets the Chinese National Standard (CNS ) A4 size (210X297 mm) " " ------- Spring yellow terminal. 9. A fuse holder comprising: a main housing; a plurality of fuse clips provided in the main housing for accommodating a plurality of cassette fuses; a fuse drawer that is slidably installed in the main housing The fuse draw includes a plurality of fuse supports, the fuse drawer can be selectively positioned between a fully closed position and a fully open position, and an auxiliary contact actuator is mounted on the main housing. When the drawer When moving between the fully open and fully closed positions, the auxiliary contact actuation benefit is displaced by the draw. 10. The fuse holder according to item 9 of the patent application scope, the drawer includes a drawer shelf extending from at least one fuse support, the drawer shelf is in contact with the auxiliary contact actuator and is used when the drawer is moved The auxiliary contact actuator is displaced. 11. The fuse holder of claim 10, wherein the auxiliary contact actuator is movable between a first position and a second position, and the first position is substantially linear from the second position. Shift. 12. The fuse holder according to item 9 of the scope of patent application, the to-the-fiber support includes a locking opening. ~ 13. The fuse holder according to item 9 of the patent application, wherein the drawer includes a retractable handle. 14. The fuse holder according to item 9 of the patent application scope, wherein the main housing -24- A B c D 523770 At least one of the scope of the patent application and the fuse drawer includes at least one fuse repulsion member. If the fuse holder of item 9 of the scope of the patent application, the main housing also includes a plurality of terminal pieces extending from the fuse clip. The fuse holder further includes at least a terminal cover enclosing the terminal piece, and a plurality of screw terminals for combining the terminal piece. 1 6 · —A fuse assembly for an industrial control device, the fuse assembly includes: a main housing, which includes a plurality of fuse containers and a plurality of terminal rooms; a fuse clip, which is installed in each of the fuse containers; a terminal Sheets are installed in each of the terminal rooms, and each of the fuse clips is electrically connected to a separate clip; a fuse drawer is installed in the main housing for sliding between an open position and a closed position The fuse drawer includes a plurality of fuse supports, a retractable handle, and a drawer frame including a locking opening; a plurality of cassette fuses are arranged in the fuse support, and when the drawer is in a closed position, The plurality of fuses are electrically coupled to the fuse clip, and when the drawer is in the open position, the fuse is pulled away from the fuse clip. 17 · The fuse assembly according to item 16 of the patent application scope, further comprising a handle recess adjacent to the retractable handle for releasing the handle. 18. The fuse assembly according to item 16 of the scope of patent application, wherein the main housing is approximately 45 mm wide. -25- This paper size applies to China National Standard (CNS) A4 (210 X 297 mm) 523770 8 8 8 8 ABC D 々, patent application scope 19. For example, the fuse assembly of the patent application scope item 18, wherein the main housing contains three fuse containers. 20. The fuse assembly according to item 18 of the scope of patent application, wherein the fuse includes a UL-class CC fuse. -26- This paper size applies to China National Standard (CNS) A4 (210 X 297 mm)